Lens.



No. 896,393. PATENTED AUG. 18, 1908.

W. K. KIGHT.

LENS.

APPLICATION FILED APR.22,1908.

' position not increasing the thickness of the UNITED STATES- PATENTOFFICE.

WILLIAM K. KIGHT, OF DEXTER, MISSOURI, ASSIGNOR TO UNIVERSAL LENSCOMPANY, OF WAVERLY, KANSAS, A CORPORATION KANSAS.

LENS.

I Specification of Letters Patent.

Patented Aug. 18,. 1908.

To all whom it may concern:

Be it known that I, WILLIAM K. Kien'r, a

citizen of the United States, residing at Dexter, Stoddard county,Missouri, have invented a certain new and useful Improvement in Lenses,of which the followingis a full, clear, and exact description, such aswill enable others skilled in the art towhich it appertains to make anduse the same, reference being had to the accompanying drawings,formingFp art of this specification, in which- I lgure 1 is anelevational view of a pair of eye glasses showing my. improved lenses inposition therein; and Fig. 2 is a sectional view through oneof thelenses.

This invention relates to a new and useful improvement in lenses for eyeglasses, being designed particularly as an improvement u on the trifocallenses illustrated in Patents os. 803,907, 803,908 and 803,909, grantedNovember 7, 1905.

.' The object of the present invention is to render the contiguous edgesof the lenses practically invisible so that the vision of the wearer inpassing fromlong distance to intermediate distance, or reading dis ce,is

more perfectly blended by the absen e of in- I terruption occasioned bya distinct line.

The patents aforesaid show and describe several methods of arranging theseveral lenses as by superposing them upon the main lens or upon eachother, or arrangin them in substantially the same vrtica plane, but ineach case the. contiguous edges of the lenses were distinctly visible tothe eye Of the wearer. I

My present invention provides the main lens which is either plain orground to accommodate the vision of the wearer, with steps or shouldersat its lower edge. In the reduced ortion thus provided are'arranged "thetwo.

enses, as shown in Fig.2, said lenses when in -mainlehs. c

In the drawings, 1 indicates the main lens which is Iprovided withshoulders a and b,-

2ist

fitted in position against the shoulder 12 and so as to be flushtherewith. L

e reading lens, socalled, .WlliiCh is.

3 is the lens for intermediate vision, which lens is fitted against theshoulder a and overthe lens 2. I

In speaking of the lenses-2 and 3 as being reading and intermediatelenses it will be understood that neither of these lenses separatelywould scrve as such but only in combination with the main lens 1 or saidmain lens and eachother. The lenses thus as sembled are practicallynothicker than the main lens, and consequently there is no added weight.mented or fused in position on the main lens 1 in a manner well-known tothose skilled in the'art. I Having thus described the invention, what isclaimed as new and desired to be'seeured by Letters Patent is: 1

1. In a lens for eye glasses, the combination with amain lens for long'distance vision, said lens being reduced in thickness at its lowerportion and provided with shoulders, of a lens for short distance orreading vision .arranged in said reduced portion and flush with one ofsaid shoulders, and a lens for 1ntermediate vision arranged over theshort distance lens and against the other of said shoulders;substantially as described.

2. In a lens for eye glasses, the combinabeing' reduced in thickness andprovided with a shoulder, of a lens for short distance or reading visionarranged in'said reduced m wltnesses,

z? Witnesses:

E. E; GUNTEB',

. GEo. W. HOWE L."

tien with a main lens focalized for long dis- 'tance vision, the lowerportion of said lens portion and against said shoulder, and a lens Thelenses 2 and 3 can be 'ce-' short distance lensand covering the jointbe; tween said short distancelens and said shoul-

